1 /*
2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #ifndef SHARE_GC_Z_ZCOLLECTEDHEAP_HPP
25 #define SHARE_GC_Z_ZCOLLECTEDHEAP_HPP
26
27 #include "gc/shared/collectedHeap.hpp"
28 #include "gc/z/zBarrierSet.hpp"
29 #include "gc/z/zCollectorPolicy.hpp"
30 #include "gc/z/zDirector.hpp"
31 #include "gc/z/zDriver.hpp"
32 #include "gc/z/zHeap.hpp"
33 #include "gc/z/zStat.hpp"
34
35 class ZCollectedHeap : public CollectedHeap {
36 private:
37 ZCollectorPolicy* _policy;
38 ZBarrierSet _barrier;
39 ZHeap _heap;
40 ZDirector* _director;
41 ZDriver* _driver;
42 ZStat* _stat;
43
44 virtual HeapWord* allocate_new_tlab(size_t word_size);
45
46 public:
47 static ZCollectedHeap* heap();
48
49 using CollectedHeap::ensure_parsability;
50 using CollectedHeap::accumulate_statistics_all_tlabs;
51 using CollectedHeap::resize_all_tlabs;
52
53 ZCollectedHeap(ZCollectorPolicy* policy);
54 virtual Name kind() const;
55 virtual const char* name() const;
56 virtual jint initialize();
57 virtual void initialize_serviceability();
58 virtual void stop();
59
60 virtual CollectorPolicy* collector_policy() const;
61 virtual AdaptiveSizePolicy* size_policy();
62
63 virtual size_t max_capacity() const;
64 virtual size_t capacity() const;
65 virtual size_t used() const;
66
67 virtual bool is_maximal_no_gc() const;
68 virtual bool is_scavengable(oop obj);
69 virtual bool is_in(const void* p) const;
70 virtual bool is_in_closed_subset(const void* p) const;
71
72 virtual HeapWord* mem_allocate(size_t size, bool* gc_overhead_limit_was_exceeded);
73 virtual void collect(GCCause::Cause cause);
74 virtual void collect_as_vm_thread(GCCause::Cause cause);
75 virtual void do_full_collection(bool clear_all_soft_refs);
76
77 virtual bool supports_tlab_allocation() const;
78 virtual size_t tlab_capacity(Thread* thr) const;
79 virtual size_t tlab_used(Thread* thr) const;
80 virtual size_t max_tlab_size() const;
81 virtual size_t unsafe_max_tlab_alloc(Thread* thr) const;
82
83 virtual bool can_elide_tlab_store_barriers() const;
84 virtual bool can_elide_initializing_store_barrier(oop new_obj);
85 virtual bool card_mark_must_follow_store() const;
86
87 virtual GrowableArray<GCMemoryManager*> memory_managers();
88 virtual GrowableArray<MemoryPool*> memory_pools();
89
90 virtual void object_iterate(ObjectClosure* cl);
91 virtual void safe_object_iterate(ObjectClosure* cl);
92
93 virtual HeapWord* block_start(const void* addr) const;
94 virtual size_t block_size(const HeapWord* addr) const;
95 virtual bool block_is_obj(const HeapWord* addr) const;
96
97 virtual void register_nmethod(nmethod* nm);
98 virtual void unregister_nmethod(nmethod* nm);
99 virtual void verify_nmethod(nmethod* nmethod);
100
101 virtual jlong millis_since_last_gc();
102
103 virtual void gc_threads_do(ThreadClosure* tc) const;
104
105 virtual VirtualSpaceSummary create_heap_space_summary();
106
107 virtual void print_on(outputStream* st) const;
108 virtual void print_on_error(outputStream* st) const;
109 virtual void print_extended_on(outputStream* st) const;
110 virtual void print_gc_threads_on(outputStream* st) const;
111 virtual void print_tracing_info() const;
112
113 virtual void prepare_for_verify();
114 virtual void verify(VerifyOption option /* ignored */);
115 virtual bool is_oop(oop object) const;
116 };
117
118 #endif // SHARE_GC_Z_ZCOLLECTEDHEAP_HPP